Rockers

Ford - 351W (5.8 L), 302 (5.0L), 302 SVO & 351 SVO
Performance level 5 - Compu-Pro - Emphasis on mid-range and top end, excellent drag profile.
INT/EXH - Dur @ .050” Lift: 276°/282° RR: 1.6/1.6 Gross Lift: .685”/.656” LSA: 108° RPM: Varies on valve train, heads, manifold, etc... to Redline: Learn More

Ford - 351W (5.8 L), 302 (5.0L), 302 SVO & 351 SVO
Performance level 5 - Pro-Street - Perfect for street/strip. Emphasis on mid-range and top end power
INT/EXH - Dur @ .050” Lift: 248°/252° RR: 1.6/1.6 Gross Lift: .558”/.547” LSA: 110° RPM: 3500 to 7000 Redline: 7000 Learn More

Ford - 351W (5.8 L), 302 (5.0L), 302 SVO & 351 SVO
Performance level 4 - Pro-Street - Perfect for street/strip. Emphasis on mid-range power.
INT/EXH - Dur @ .050” Lift: 232°/242° RR: 1.6/1.6 Gross Lift: .528”/.530” LSA: 112° RPM: 2500 to 6500 Redline: 7000 Learn More

Ford - 221, 255 (4.2L), 260, 289, 302(5.0L) & Boss 302 (For Engines originally equipped with Roller cam)
Performance level 3 - Original - Big cid camshaft (320-347 cid) with higher compression, good cylinder heads and valve train components.
INT/EXH - Dur @ .050” Lift: 228°/234° RR: 1.6/1.6 Gross Lift: .512”/.531” LSA: 112° RPM: 2600 to 6000 Redline: 6500

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Ford - 221, 255 (4.2L), 260, 289, 302(5.0L) & Boss 302 (Engines originally equipped with Roller cam)
Performance level 4 - Original - Aggressive rpm camshaft, high stall A.O.D. or a 5-speed with low gears. For well prepared engines.
INT/EXH - Dur @ .050” Lift: 234°/240° RR: 1.6/1.6 Gross Lift: .534”/.545” LSA: 110° RPM: 2700 to 6200 Redline: 6500

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Ford - 221, 255 (4.2L), 260, 289, 302(5.0L) & Boss 302 (Engines originally equipped with Roller cam)
Performance level 5 - Original - Top end insanity for serious, professionally built engines only. 1⁄4 mile drag special.
INT/EXH - Dur @ .050” Lift: 236°/242° RR: 1.6/1.6 Gross Lift: .524”/.529” LSA: 110° RPM: 3000 to 6300 Redline: 6500

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Ford - 221, 255 (4.2L), 260, 289, 302(5.0L) & Boss 302 (For Engines originally equipped with Roller cam)
Performance level 2 - Original - Most popular Ford hyd roller grind, blows away Chevrolets. Heavy mid-range.
INT/EXH - Dur @ .050” Lift: 222°/228° RR: 1.6/1.6 Gross Lift: .496”/.512” LSA: 112° RPM: 2400 to 5700 Redline: 6200

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Ford - 221, 255 (4.2L), 260, 289 & 302& Boss 302 (For engines not originally equipped with roller lifters)
Performance level 3 - Original - Big cid camshaft (320-347 cid) with higher compression, good cylinder heads and valve train components.
INT/EXH - Dur @ .050” Lift: 228°/234° RR: 1.6/1.6 Gross Lift: .512”/.531” LSA: 112° RPM: 2600 to 6000 Redline: 6500

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Ford - 221, 255 (4.2L), 260, 289 & 302& Boss 302 (For engines not originally equipped with roller lifters)
Performance level 4 - Original - Aggressive rpm camshaft, high stall A.O.D. or a 5-speed with low gears. For well prepared engines.
INT/EXH - Dur @ .050” Lift: 234°/240° RR: 1.6/1.6 Gross Lift: .534”/.545” LSA: 110° RPM: 2700 to 6200 Redline: 6500

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Ford - 221, 255 (4.2L), 260, 289 & 302& Boss 302 (For engines not originally equipped with roller lifters)
Performance level 2 - Original - Big sound. Excellent 5-speed cam for heavy car. Strong low and mid-range torque.
INT/EXH - Dur @ .050” Lift: 218°/224° RR: 1.6/1.6 Gross Lift: .468”/.486” LSA: 114° RPM: 2200 to 5500 Redline: 6000

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